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(No Model.) 4 Sheets-Sheet 1.

A. F. DEVIGN'E 80 J. P. DURAND. WEFT STOP MOTION FOR LOOMS.

No. 449,283. nted MarQBl, 1891.

(No Model.) 4 Sheets-Sheet 2.

A. F. DEVIGNE & J. P. DURAND. WEFT STOP MOTION FOR LOOMS.

No. 449,283. Patented Mar. 31,1891.

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(No Model.) 4 SheetsSheet 3. A. F. DEVIGNE & J. P. DURAND.

WEFT STOP MOTION FOR LOOMS.

No. 449,283. Patented Mar. 31, 1891'.

(No Model.) 4 Sheets-Sheet 4-.

A. P. DEVIGNE 8?; J. P. DURAND. WEPT STOP MOTION FOR LOOMS.

No. 449,283. Patented Mar. 31, 1891.

UNITED STATES PATENT FFICE.

ANTOINE ERANooIs DEvIeNE AND JEAN PIERRE DURAND, or LA OOlUR-DU- 1 PIN,FRANCE.

WEFT STOP-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 449,283, dated March31, 1891.

Application filed June 20, 1890. Serial No. 366,169. (No model.)Patented in France October 2'7, 1886, No. 179,169; in Belgium November13, 1886,}10. 75,223; in England December 30, l886,N0.l'7 .O9 1; inItaly December 31. 1886, XLI, 227 in 8pain January 3, 1887.110. 10,314,and in Germany November 19, 1887, No. 51,464.

To all whom, it may concern:

13c it known that we, ANTOINE FRANqoIs DEvIeNE and JEAN PIERRE DURAND,of the city of La Cour-du-Pin, France, have invented Weft-Stop Motionsfor Looms, (for which we have obtained Letters Patent in France forfifteen years, dated October 27, 1886, No. 179,169; in Belgium forfifteen years, dated November 13, 1886, No. 75,223; in Great Brit- Ioaim for fourteen years, dated December 30,

1886, No. 17,094; in Italy for fifteen years, dated December 81, 1886,No. 227, Vol. 41; in Spain for twenty years, dated January 3, 1887, No.10,314, and in Germany for fifteen years, dated November 19, 1887, No.51,464,) of which the following is a full, clear, and exact description.

This invention relates to an improved weft stop-motion for power-looms,the distinguishzo ing feature of which is that the weft is kept at auniform tension while it is being beaten up into the fabric, whereby thelatter is more closely woven with a less consumption of Weft, whereas inthe old looms the weft is pushed away more or less from the goods by theweft-fork and is consequently beaten up in a more or less slackcondition.

Reference is to be had to the accompanying drawings, forming part ofthis specification, wherein- Figures 1 and 2 show in front and sideelevation as much of the loom as is necessary to illustrate the weftstop-motion. Fig. 3 is a rear elevation of the driving mechanism of theloom. Fig. at shows an elevation of the weft-fork on a larger scale inthe position it occupies on seizing the weft after the boxing of theshuttle. Figs. 5, 6,and 7il1ustrate the working of the weft stop-motion.Fig. 8 is a 40 sectional plan view of the loom, showing the cam and itsdriving mechanism shown in Fig. 1.

r s are pairs of grids, one pair at each side of the loom, the gridsbeing arranged one above the other between the reed n and theshuttle-boxes b, and actuated in such manner that they grasp and holdthe weft in tension immediately after each passage of the shuttlethrough the shed, as shown in Fig. 4,

and during the beating up of the weft.

the loom 7e. ers carried at the upper ends of levers t, that while inthe absence of weft the bars of the upper grid 1' will fall betweenthose of the lower grid 3 and immediately cause the knockoff of theloom. The upper grid 0' of each pair is carried at one end of a lightlever pivoted at r on the batten and terminating at the other end in ahook-shaped catch r Figs.2, 5, 6,

and 7. The lowergrid s is fixed to a verticallymovable slides, mountedon the front of the batten, and is moved upward immediately afterthelaying in of the weft by the tension of aspring s acting on a lever.9 Figs. 2, 5, 6, and 7, which is permitted to come into action at theproper moment, as hereinafter described. The motion of the weft on theone hand and the object to be attained by the grids permit of definitepositions of these grids 'r and s during the weaving. The grids are onlypermitted to close together after the laying in At other times the gridsmust be separated, and for this purpose the operation of the grids iscontrolled by the cam ('1, Figs. 1, 2, and 8, fast on the shaft g, whichhas a concentric depression extending around about a fourth of itscircumference, and is actuated through the bevel-wheels g from the mainshaft of The cam t acts on friction-rollare drawn toward said cam by aspring w. The lower ends of the levers t are connected by means ofbell-crank levers t and rods 2& with vertically-movable slides to, eachhaving two lugs r and 5 respectively, acting periodically on levers rand s and putting spring 8 in tension. As long as the correspondingfriction roller bears against the highest part of the cam, the lug sdepresses the lever s and the lug r acts on the lever r and raises gridr, as shown in Fig. 5. When the friction-roller falls into thedepression of the cam the slide it rises. This takes place directly theshuttle is boxed at that side of the batten, which is then in itsbackward position. hen the slide it releases the levers 1"? and 3 thegrid 4' falls down upon the weft, but the lower grid 5 is prevented fromrising (by a vertical tail-piece or projection s of the lever 8 abuttingagainst a stationary stop 5 Figs. 2, 5, 6, and 7) until the batten hascommenced its forward motion, whereupon the tail-piece 5 moves away fromthe stationary abutment s and the lower grid sis raised by the action ofthe spring 8 until it meets the weft just laid between it and the uppergrid, the weft being thereby nipped between the two grids, as shown inFigs. 4 and 6, so that it is held taut during the beating up, thusproducing a close texture and effecting an economy of yarn.

Fig. 6 shows how the presence of the weft between the grids keeps thehook 0* out of, reach of the catch 0 of the mechanism for actuating thebelt-shipper and stopping the loom. Should the weft be brokenor absent,or the shuttle be trapped in the shed, the upper grid being unsupportedwill drop into the lower grid, as shown in Fig. 7, and the hook T willbe raised into position for engagement with the hook b, so as on thebeating up of the batten to cause the belt to be thrown off and the loomto be instantly stopped.

The knocking-off mechanism of the loom is shown in Fig. 2 and comprisesthe catches 1, each carried by a lever 5, mounted on a fixed center andconnected by rod 4, spring 3, and lever-arm l with a rock-shaft 12". Onthis shaft 1) is loosely mounted an arm- 1, carrying a spring-pressedcatch r adapted to engage with a trigger o and swing it from the normalposition into the position shown,

bination of two vertically-movable grids r and s, the upper grid 4"being adapted to drop which is in a path of a lug r on the periphery ofa wheel i2 fast on the main shaft K. The trigger v is pivoted toavertically-sliding bar 0 which, on the trigger o being struck by the lug11 is slid upward in its guides and acts on an elbow-leverm,

Figs. 2 and 3, connected at its lower end with lug 11 against thetrigger upper end of arm 2 for the purpose of keeping rod. 4 fromfalling, may move without pulling the arm 1, since there'is only aspring 3 connecting them, said springbeing only strong enough toovercome the ordinary resistance occasioned in the regular working ofthe machine. The attendant can also stop the loom and of which the otherarm is forked and embraces the grooved collar of the clutch m. j hen theenlargement or is between the pulleys 00 m the clutch is disengaged, andthis is the normal position of working, the beltshi'pper being thenopposite the fast pulley; but when the belt is thrown onto the loose pulley the clutch is thrown into gear, and so enables the workman to drivethe loom slowly by hand through the medium of the handwheel y,the'inclined shaft y, and bevelgears g Weclaim In a weft. stop-motionfor looms, the comby gravity and the lower grid 8 being sliding stop 8.the slide-bar to, having the stops r 'ands ,and the lever r and catch12, substantially as herein shown and described.

The foregoing specification of our weft stop- I motion for power-loomssigned by us this 23d v.day of'M'ay, 1890.

ANTOINE rRAnoois DEVIGNE. J'EAN PIERRE DURAND.

Witnesses:

EDW. P. FAIRFIELD, BoURILLo, J H. MEYER, H. BARINED.

.by pushing the rod '0 Fig. 2, which is With-

